Maxscript: This function demonstrates how to implement a simple 'bias' control to weight values towards one direction versus the other.

Bias Expression | .ms

-- biasStrength : range:[-1,1,0]
-- biasPower : range:[1,100,0]
fn CalculateBias val:0.0 bias:0.0 biasPower:1 =
(
	if bias < 0 then 1 - (pow (1 - val) (1 - biasPower*bias)) else (pow val (1 + biasPower * bias))
)

fn BiasTest = 
(
	count = 20
	height = 10
	strength = .5
	power = 9

	for k = 0.0 to count-1 do
	(	
		f = k / (count-1.0)
		posZ = CalculateBias val:f bias:strength biasPower:power
		posZ *= height
		point pos:[0,0,posZ] wirecolor:green size:1
	)
)
delete objects
BiasTest()